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Old 01-13-2004, 03:02 PM
ron eckman ron eckman is offline
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Compression Ratio

Hello everyone and thanks for making this site so cool. The knowledge you all share is very helpful especially to a backyard mechanic like myself.
I'm dialing in my 355 trying to get the most out of it. My last thread I asked about if I could run a small blower with 10:5 compression thats what I was told I had. I just bought a compression gauge and tested all the cylinders. My results vary from 160 - 170 is this an accurate way of determining my compression ratio? If my compression turns out to be more like 9:5 how much boost my I be able to run?
Also I have another holley question. I just bought a vacuum gauge and a air fuel mixture gauge with an 02 sensor. Should I tune my mixture screws to the highest vacuum or should I tune it with the air fuel mixture gauge. Any advice is appreciated and thanks for your time
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